Question

I have 20 more nickels than I have dimes. If the sum of money I have is $8.50, how many coins of each type do I have?

Answer 1

Number of dimes were `50` and of nickels were `70`.

Explanation:

`1` nickel worth `5` cents , `1` dime worth `10` cents

`$1` worth `100` cents `:. $8.50=850` cents . Assuming the

number of dimes be `x` , then number of nickels is `x+20` .

In given condition, `10 x +5 (x+20)= 850 or 15 x = 850-100`

or `15 x=750 or x = 750/15 or x= 50 :. x+20=70`

Therefore, number of dimes were `50` and nickels were `70`.[Ans]